Diva Dishin' Mariah and Whitney come clean in exclusive interviews. music_carey_houston_split.jpg 60x45 G0 http://abcnews.go.com/sections/GMA/videofiles/Video/021203mariah_video.ram 10390297099740 abcnews_free.gif lock_icon.gif superpass.gif http://abcnews.go.com/sections/GMA/videofiles/Video/021203mariah_video.ram 10390297099741 Mariah Carey lock_icon.gif superpass.gif http://abcnews.go.com/sections/GMA/videofiles/Video/primetime_houston_alt_video.ram 10390297099742 Whitney Houston lock_icon.gif lock_icon.gif headline